Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5b4af061ffea5e1…

MALICIOUS

PDF

141.2 KB Created: 2020-08-29 21:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd5366ced3e8ba7629dcb25c13624a5 SHA-1: 0b6da30eb7789092f83e873dcec4a1b0d1e19612 SHA-256: c5b4af061ffea5e1480a26cd6d6d38dc0e2d2c360de372f1ff954745eee5f30d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is used in conjunction with a lure for 'simple planes free download', suggesting a social engineering tactic to trick users into clicking the link. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility of malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wix?keyword=simple+planes+free+download
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/23080136786.pdf
    • https://cdn.shopify.com/s/files/1/0440/5208/6934/files/fagorixuwabaxawukoro.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/vonewado.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/doratomaralukenewokeledes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/34959392928.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/36104285857.pdf
    • https://cdn.shopify.com/s/files/1/0440/1401/0518/files/how_to_softmod_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zeperilifo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/dasar_dasar_akuntansi_jilid_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/39298205687.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/free_cv_template_word_indonesia.pdf
    • https://static.usrfiles.com/ugd/b8c837_a16243ebcdbd4868bbc87085dd1323c0.pdf
    • https://static.usrfiles.com/ugd/8b2c09_44afb05ff0f249a2859e121c63f0833f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9152adba514f4e8fa39da77a059d4bd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_85b929d8dcab4a2486368884811edd8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_dad603711759498baecad27aba6bcb64.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e32c.bin
26557d4acb74df9e7fa1d1d16ea14a9fe65eed0a7aa1916327d0a84f4b962131
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E32C 3436 bytes
font_01_sfnt_off0001ef79.bin
c674ba583277d337476ce2051e61e5d8bbce14936d0920e4eed9a4d1dd02d5d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF79 5380 bytes
font_02_sfnt_off000201b1.bin
b040c73e3be5af5ba2735c181426f0496680f610f432b2be503071df67d8b314
pdf-font-stream PDF embedded font (sfnt) at offset 0x201B1 10796 bytes